Area of a shaded trapezium within a rectangle involving algebra.

I have a labelled screenshot of how to go about this question

OO

Related Maths GCSE answers

All answers ▸

How do i factorise 20 + 10x?


Work out the equation of the tangent to a circle of centre [0,0] at the point [4,3]


How do I solve simultaneous equations that aren't linear, for example x^2 + 2y = 9, y = x + 3


Factorise x^2 + 3x +2